Transport rate of drifting snow and the mean wind speed profile
Transport rate of drifting snow and the mean wind speed profile
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DOI：
10.1007/bf00122380
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发表时间：
1986-02
影响因子：
4.3
通讯作者：
R. Schmidt
中科院分区：
文献类型：
--
作者：
R. Schmidt
在坚硬的雪或冰上，通过称量吹入滤布陷阱的雪的传输率，比在柔软、新鲜的雪面上相同的风速时要大。对9次暴雪的风速廓线分析表明，移动的粒子与地面之间的摩擦较小，坚硬表面上的粒子速度较大。在粗糙-光滑过渡区，随着气动粗糙度的减小，在给定风速下的输运率迅速增加。巴格诺德的推移质输运理论为分析提供了一个有用的框架。
Transport rates, measured by weighing snow blown into a filter fabric trap, were greater over hard snow or ice than for the same wind speed over soft, fresh snow surfaces. Analysis of wind speed profiles from nine blizzards showed that friction between moving particles and the surface was less, and particle speeds were greater over hard surfaces. Transport rates at a given wind speed increased rapidly as aerodynamic roughness decreased in the rough-smooth transition region. Bagnold's theory for bed load transport provided a useful framework for the analysis.